631479123 has 24 divisors (see below), whose sum is σ = 1018205760. Its totient is φ = 373811760.

The previous prime is 631479109. The next prime is 631479133. The reversal of 631479123 is 321974136.

631479123 is a `hidden beast` number, since 63 + 1 + 479 + 123 = 666.

It is not a de Polignac number, because 631479123 - 2⁸ = 631478867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631479133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69913 + ... + 78426.

It is an arithmetic number, because the mean of its divisors is an integer number (42425240).

Almost surely, 2^631479123 is an apocalyptic number.

631479123 is a deficient number, since it is larger than the sum of its proper divisors (386726637).

631479123 is a wasteful number, since it uses less digits than its factorization.

631479123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148399 (or 148396 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 631479123 is about 25129.2483572430. The cubic root of 631479123 is about 857.9322611037.

The spelling of 631479123 in words is "six hundred thirty-one million, four hundred seventy-nine thousand, one hundred twenty-three".